<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>first vue</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
</head>

<body>
    <div id="app">
        {{message}}
    </div>

    <script>
        var app = new Vue(
            {
                el: "#app",
                data: {
                    message: "Hello Vue!"
                }
            }
        )
    </script>
</body>

</html>